Year	Percent
1960-01-01	39.59044368600680
1961-01-01	13.69193154034240
1962-01-01	131.39784946236500
1963-01-01	145.91078066914500
1964-01-01	108.99470899470900
1965-01-01	306.76311030741500
1966-01-01	1136.25411220770000
1967-01-01	106.00000000000000
1968-01-01	128.84304207119700
1969-01-01	15.47987021516180
1970-01-01	12.39946464878150
1971-01-01	4.23374894488334
1972-01-01	6.52174921283020
1973-01-01	31.04188127111310
1974-01-01	40.49179043847150
1975-01-01	19.16569713355880
1976-01-01	19.82865369566410
1977-01-01	11.05208979462540
1978-01-01	8.11258259525912
1979-01-01	16.23276575501780
1980-01-01	18.03543016168930
1981-01-01	12.26590851419110
1982-01-01	9.44542395353453
1983-01-01	11.79974052151760
1984-01-01	10.45503482319000
1985-01-01	4.72453615680209
1986-01-01	5.82266696175201
1987-01-01	9.27865613161590
1988-01-01	8.04536715123097
1989-01-01	6.41553963494968
1990-01-01	7.81919144730541
1991-01-01	9.41905827724153
1992-01-01	7.52351717022744
1993-01-01	9.67189338180124
1994-01-01	8.53200525418844
1995-01-01	9.42032321644617
1996-01-01	7.97328085611421
1997-01-01	6.22614163387585
1998-01-01	58.45104447239460
1999-01-01	20.47783111264010
2000-01-01	3.68861915958351
2001-01-01	11.50011487917680
2002-01-01	11.90011756637790
2003-01-01	6.75731719362850
2004-01-01	6.06405988526519
2005-01-01	10.45319841938650
2006-01-01	13.10867209852970
2007-01-01	6.40656281325702
2008-01-01	10.22666454731480
2009-01-01	4.38641555014729
2010-01-01	5.13420400767930
2011-01-01	5.35604778982150
2012-01-01	4.27949999641976
2013-01-01	6.41251330156414
2014-01-01	6.39492540819922
2015-01-01	6.36312113115614
2016-01-01	3.52580515687930
2017-01-01	3.80879806953163